package cn.lbwfree.web.filter;

import cn.lbwfree.web.entity.Admin;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebFilter(filterName = "AdminFilter", urlPatterns = "/admin")
public class AdminFilter implements Filter {
    public void destroy() {
    }

    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {
        HttpServletRequest request = (HttpServletRequest) req;
        HttpServletResponse response= (HttpServletResponse) resp;
        HttpSession session = request.getSession();
        Admin admin =(Admin) session.getAttribute("admin");
        if(admin == null){
            response.sendRedirect("login.jsp");
        }else{
            chain.doFilter(request, response);
        }
    }

    public void init(FilterConfig config) throws ServletException {

    }

}
